package com.sky.service.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.crypto.SecureUtil;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordEditFailedException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import lombok.RequiredArgsConstructor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
@RequiredArgsConstructor
public class EmployeeServiceImpl implements EmployeeService {


    private final EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 后期需要进行md5加密，然后再进行比对
        password= SecureUtil.md5(password);
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void save(EmployeeDTO employeeDTO) {

        Employee employee = BeanUtil.
                copyProperties(employeeDTO, Employee.class);
        //设置添加的用户
        employee.setStatus(StatusConstant.ENABLE);
        //设置默认密码
        employee.setPassword(SecureUtil.md5(PasswordConstant.DEFAULT_PASSWORD));

        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());
        //
        //employee.setCreateUser(BaseContext.getCurrentId());
        //employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.insert(employee);
    }

    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        //分页查询 pagehelper
        //开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);
        long total = page.getTotal();
        List<Employee> employeeList = page.getResult();

        return new PageResult(total,employeeList);
    }

    @Override
    public void status(Integer status,Long empId) {
        Employee employee = new Employee();
        employee.setStatus(status);
        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser(BaseContext.getCurrentId());
        employee.setId(empId);
        employeeMapper.updateEmp(employee);
    }

    @Override
    public void updateEmp(EmployeeDTO employeeDTO) {
        Employee employee = BeanUtil.copyProperties(employeeDTO, Employee.class);
        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.updateEmp(employee);
    }

    @Override
    public Employee getById(Long id) {
        Employee employee = employeeMapper.getById(id);
        employee.setPassword("************");
        return employee;
    }

    @Override
    public void editPassword(PasswordEditDTO passwordEditDTO) {
        Employee employee = employeeMapper.getById(BaseContext.getCurrentId());
        String password = employee.getPassword();
        String oldPassword = SecureUtil.md5(passwordEditDTO.getOldPassword());
        String newPassword = SecureUtil.md5(passwordEditDTO.getNewPassword());
        //如果新密码和旧密码相同则不给予更改
        if(newPassword.equals(oldPassword)){
            throw new PasswordEditFailedException(MessageConstant.OLD_PASSWORD_EQUAL_NEW_PASSWORD);
        }
        //如果输入的旧密码与数据库中的不同则返回错误
        if (!password.equals(oldPassword)) {
            throw new PasswordEditFailedException(MessageConstant.OLD_PASSWORD_ERROR);
        }
        Employee build = Employee.builder()
                .id(BaseContext.getCurrentId())
                .password(newPassword)
                //.updateTime(LocalDateTime.now())
                //.updateUser(BaseContext.getCurrentId())
                .build();
        employeeMapper.updateEmp(build);
    }

}
